I don't find many paralleles between the two accounts, the only part which is a little bit corresponding is the following phrase:

Mr. N.:

A moment later Prince Hohenlohe himself appeared; riding up the line of the left flank. The soldiers of each battalion cheered as he rode by. All my troops were in high spirits. Their cheers ring in my ears to this day, the enthusiasm shown by my men made me proud.

Marwitz (p. 171):

The prince [...] now rode up from the left flank along the line of infantry, spoke to the troops, reminded them of the old Prussian glory, of the deeds of their anchestors, and was greated everywhere with the loudest shouts of Vivat! and the insistent demand to attack.

Seems to me the same scene, but seen from different perspectives. Marwitz doesn't write that he felt proud, even though he surely did.